The US government has filed charges against Google, accusing the company of violating competition law to preserve its monopoly over internet searches and online advertising. As the Department of Justice sues the search engine google for being a monopoly, could all tech giants be under threat? We hear from Eric Schmidt, the former CEO of Google and Jack Poulsen, a software engineer and former Google employee. We also get the view of Sally Hubbard, a former New York anti-trust attorney and current director of enforcement strategy at the Open Markets Institute. (Pic of Google logo by Jakub Porzycki via Getty Images).